CN114251057B - Gas lift process pipe column of continuous oil pipe dragging jet pump with fixed pipe column and operation method of gas lift process pipe column - Google Patents
Gas lift process pipe column of continuous oil pipe dragging jet pump with fixed pipe column and operation method of gas lift process pipe column Download PDFInfo
- Publication number
- CN114251057B CN114251057B CN202110535650.6A CN202110535650A CN114251057B CN 114251057 B CN114251057 B CN 114251057B CN 202110535650 A CN202110535650 A CN 202110535650A CN 114251057 B CN114251057 B CN 114251057B
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- tube
- wall
- gas lift
- oil
- coiled tubing
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000003129 oil well Substances 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000009792 diffusion process Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 42
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000012856 packing Methods 0.000 description 7
- 238000000605 extraction Methods 0.000 description 5
- 239000010620 bay oil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/122—Gas lift
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a gas lift process tubular column of a continuous oil pipe dragging jet pump of an immobile tubular column and an operation method thereof. The position of the process pipe column is changeable, so that the lifting efficiency of the gas lift well can be improved, the advantage of continuous gas lift liquid delivery is exerted, and the purposes of increasing the productivity and saving energy and reducing consumption are achieved.
Description
Technical Field
The invention relates to the technical field of oil field production and injection increase, in particular to a gas lift process pipe column of a continuous oil pipe dragging jet pump of an immovable pipe column and an operation method thereof.
Background
Gas lift, a method of lifting liquid, has been widely used in bay oil fields since the beginning of its use in 1865 pa. For many years gas lift has been used only as a transitional means during the period of time before the self-blowing energy is reduced and pumping is employed. At the beginning of the 20 s, various types of gas lift valves appeared successively. Gas lift has been further developed until now, and a great deal of gas lift production has been carried out in all countries around the world, accounting for about 15% of the artificial lifting modes in the united states, and about 10% of the world.
The gas accelerating pump process developed by combining the advantages of jet pump process and gas lift process is an oil extraction process which is applied and developed only in the middle 90 s of the 20 th century. The gas accelerating pump process is applied at home and abroad, but the research on the theory is little, and the gas accelerating pump process is mainly in a test stage.
In the gas lift oil extraction process, in order to adapt to the change of the oil well production condition, the position and the working parameters of the valve need to be changed in time. When using a fixed gas lift valve, the position and operating parameters of the valve must be adjusted by lifting the tubing string. In this way, the workload is large, the cost is high, and the production is seriously influenced.
Disclosure of Invention
The invention overcomes the defects in the prior art, and the existing fixed gas lift valve has the problems of large workload, high cost and serious influence on production, and provides the gas lift process pipe column of the continuous oil pipe dragging jet pump without the pipe column and the operation method thereof.
The aim of the invention is achieved by the following technical scheme.
The utility model provides a continuous oil pipe of fixed tubular column drags jet pump gas lift technology tubular column, includes expansion packer center tube, expansion packing element, urceolus and biography press pipe be provided with down centralizer on the tail end outer wall of expansion packer center tube, install down expansion packing element seat under on the outer wall of expansion packer center tube of centralizer top down in proper order expansion packing element and last expansion packing element seat for seal the annular space between the outer wall of oil pipe and the coiled tubing inner wall that lie in expansion packing element below, in order to carry out the gas lift operation to the liquid in the annular space between the outer wall of oil pipe and the coiled tubing inner wall that lie in expansion packing element top, the head end of expansion packer center tube with the tail end of urceolus links to each other through last centralizer be provided with down the seal in the tail end inner chamber of urceolus, offered the gas lift through-hole on the urceolus lateral wall of lower seal top in order to flow into the annular space between urceolus outer wall and the oil pipe inner wall from the interior, the end inner wall of urceolus and tail end of coiled tubing inner wall and the annular space that lie in the expansion packing element below are connected with the tail end of annular space and the coiled tubing inner wall through the seal down in proper order, the nose cover is connected with the inner wall of pipe, the seal down through the seal pipe.
An upper connector is arranged on the outer wall of the head end of the upper expansion rubber cylinder seat.
The operation method for dragging the jet pump gas lift process pipe column by the continuous oil pipe with the fixed pipe column is carried out according to the following steps:
step 1, firstly, a well-dredging pipe column is put into an oil well to be lifted, so as to ensure that a well-dredging tool is put into the bottom hole position of the oil well to be lifted for a plurality of times, and the well-dredging pipe column is lifted after well dredging is finished;
step 2, a coiled tubing of an immovable string is dragged to a jet pump gas lift process string to be lifted to a selected depth position of an oil well, power fluid is injected into the coiled tubing to seal an expansion rubber barrel, simultaneously an annular control valve between the inner wall of the oil tube and the outer wall of the coiled tubing is throttled and pressurized to check sealing, the change condition of injection pressure is observed, if the annular injection pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is stable and unchanged after the requirement is met, the expansion rubber barrel is well sealed, if the annular pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is unstable, the injection fluid enters into a stratum, the immovable string coiled tubing is required to be lifted out, the expansion rubber barrel on the coiled tubing is replaced, the continuous tubing of the immovable string is dragged to be lifted again, and the sealing process is repeated again until the annular injection pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is stable and unchanged after the requirement is met;
step 3, connecting a ground tool after seal inspection is qualified, injecting power gas into the continuous oil pipe, and carrying out gas lift operation on underground liquid in the annular space between the outer wall of the pipe column above the expansion rubber cylinder and the inner wall of the oil pipe;
and 4, injecting power gas into the coiled tubing when the gas lift operation is required to be carried out on the underground liquid at the next layer, and after the expanding rubber sleeve is unsealed, dragging the jet pump gas lift process tubular column to the next layer by using the continuous tubing without the tubular column, and repeating the steps 1-3, thereby completing the gas lift operation of the whole oil well to be lifted.
In step 1, the outside diameter of the well tool is the same as the outside diameter of a coiled tubing string dragging jet pump gas lift process string.
The beneficial effects of the invention are as follows: according to the invention, the continuous oil extraction technology of the jet pump is utilized by adopting the continuous oil pipe dragging jet pump gas lift process of the fixed pipe string, so that the self superiority of the continuous oil extraction technology of the jet pump is brought into play, the lifting efficiency of the gas lift well can be improved, the advantages of continuous gas lift oil extraction are brought into play, the purposes of increasing productivity and saving energy and reducing consumption are achieved, and a plurality of problems caused by the fact that the position and working parameters of the valve are required to be regulated by lifting the oil pipe string when the fixed gas lift valve and a conventional design method are utilized are solved.
Drawings
FIGS. 1a-d are schematic partial structures of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIGS. 3a-d are schematic illustrations of partial fluid flow according to the present invention;
FIG. 4 is a schematic diagram of the overall fluid flow direction of the present invention;
in the figure: 1 is a lower centralizer; 2 is an expansion packer central tube; 3 is a lower expansion rubber cylinder seat; 4 is an expansion rubber cylinder; 5 is an upper expansion rubber cylinder seat; 6 is an upper connector; 7 is an upper centralizer; 8 is a lower sealing body; 9 is an outer cylinder; 10 is a connecting pipe; 11 is a diffusion tube; 12 is a throat; 13 is an overcurrent cover; 14 is a nozzle; 15 is a pressure transmission tube; 16 is an upper sealing body; 17 is a coiled tubing joint; 18 is a coiled tubing; 19 is an oil pipe.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
The technical scheme of the invention is further described by specific examples.
Example 1
The utility model provides a continuous oil pipe of a fixed pipe column drags jet pump gas lift technology tubular column, including expansion packer center tube 2, expansion rubber tube 4, urceolus 9 and transfer pressure pipe 15, be provided with down centralizer 1 on the tail end outer wall of expansion packer center tube 2, install down expansion rubber tube seat 3, expansion rubber tube 4 and last expansion rubber tube seat 5 from bottom to top on the outer wall of expansion packer center tube 2 of under centralizer 1, be used for sealing the annular space between the outer wall of oil pipe 19 and the inner wall of continuous oil pipe 18 that lie in under expansion rubber tube 4, in order to carry out the gas lift operation to the liquid in the annular space between the outer wall of oil pipe 19 and the inner wall of continuous oil pipe 18 that lie in above expansion rubber tube 4, the head end of the expanding packer central tube 2 is connected with the tail end of the outer tube 9 through an upper centralizer 7, a lower sealing body 8 is arranged in an inner cavity of the tail end of the outer tube 9, a gas lifting through hole is formed in the side wall of the outer tube 9 above the lower sealing body 8, so that power gas entering the outer tube 9 through a continuous oil tube 18 and a pressure transmission tube 15 flows into an annulus between the outer wall of the outer tube 9 and the inner wall of an oil tube 19 from the outer tube 9, the inner wall of the head end of the outer tube 9 is in threaded connection with the outer wall of the tail end of the pressure transmission tube 15, a connecting tube 10, a diffusion tube 11, a venturi 12, an overflow cover 13, a nozzle 14 and an upper sealing body 16 are sequentially arranged in the outer tube 9 and the pressure transmission tube 15 above the gas lifting through hole from bottom to top, and the inner wall of the head end of the pressure transmission tube 15 is connected with the outer wall of the tail end of the continuous oil tube 18 through a continuous oil tube joint 17.
The expansion packer central tube 2, the lower expansion rubber tube seat 3, the expansion rubber tube 4 and the upper expansion rubber tube seat 5 can realize the function of the hydraulic control expansion packer, and pressure control is realized by injecting power fluid into the continuous oil tube 18, so that the expansion packer can be sealed and isolated at any position in the pit, pressure control is realized by injecting power gas into the continuous oil tube 18, and the setting and unsetting processes of the expansion rubber tube 4 are controlled by the power gas through the pressure transmission tube 15.
The lower sealing body 8, the outer cylinder 9, the connecting pipe 10, the diffusion pipe 11, the throat 12, the overflow cover 13, the nozzle 14 and the upper sealing body 16 can realize the function of a jet pump, and the gas lifting operation of underground liquid can be realized by conveying power gas into the continuous oil pipe.
The annulus between the inner cavity of coiled tubing 18, the outer wall of coiled tubing 18 and the inner wall of tubing 19 can be used as a production channel for the injection of power gas and production fluids.
Example two
On the basis of the first embodiment, an upper connector 6 is mounted on the outer wall of the head end of the upper expansion rubber cylinder seat 5.
Example III
The operation method for dragging the jet pump gas lift process pipe column by the continuous oil pipe with the fixed pipe column is carried out according to the following steps:
step 1, firstly, a well-dredging pipe column is put into an oil well to be lifted, so as to ensure that a well-dredging tool is put into the bottom hole position of the oil well to be lifted for a plurality of times, and the well-dredging pipe column is lifted after well dredging is finished;
step 2, a coiled tubing of an immovable string is dragged to a jet pump gas lift process string to be lifted to a selected depth position of an oil well, power fluid is injected into the coiled tubing to seal an expansion rubber barrel, simultaneously an annular control valve between the inner wall of the oil tube and the outer wall of the coiled tubing is throttled and pressurized to check sealing, the change condition of injection pressure is observed, if the annular injection pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is stable and unchanged after the requirement is met, the expansion rubber barrel is well sealed, if the annular pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is unstable, the injection fluid enters into a stratum, the immovable string coiled tubing is required to be lifted out, the expansion rubber barrel on the coiled tubing is replaced, the continuous tubing of the immovable string is dragged to be lifted again, and the sealing process is repeated again until the annular injection pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is stable and unchanged after the requirement is met;
step 3, connecting a ground tool after seal inspection is qualified, injecting power gas into the continuous oil pipe, and carrying out gas lift operation on underground liquid in the annular space between the outer wall of the pipe column above the expansion rubber cylinder and the inner wall of the oil pipe;
and 4, injecting power gas into the coiled tubing when the gas lift operation is required to be carried out on the underground liquid at the next layer, and after the expanding rubber sleeve is unsealed, dragging the jet pump gas lift process tubular column to the next layer by using the continuous tubing without the tubular column, and repeating the steps 1-3, thereby completing the gas lift operation of the whole oil well to be lifted.
In step 1, the outside diameter of the well tool is the same as the outside diameter of a coiled tubing string dragging jet pump gas lift process string.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second", and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The foregoing detailed description of the invention has been presented for purposes of illustration and description, but is not intended to limit the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (4)
1. The utility model provides a continuous oil pipe of fixed tubular column drags jet pump gas to lift technology tubular column which characterized in that: the expanding packer comprises an expanding packer central tube, an expanding rubber tube, an outer tube and a pressure transmission tube, wherein a lower centralizer is arranged on the outer wall of the tail end of the expanding packer central tube, a lower expanding rubber tube seat is sequentially arranged on the outer wall of the expanding packer central tube above the lower centralizer from bottom to top, the expanding rubber tube and the upper expanding rubber tube seat are used for sealing an annulus between the outer wall of the oil tube below the expanding rubber tube and the inner wall of the continuous oil tube so as to perform gas lift operation on underground liquid in the annulus between the outer wall of the oil tube above the expanding rubber tube and the inner wall of the continuous oil tube, the head end of the expanding packer central tube is connected with the tail end of the outer tube through the upper centralizer, a lower sealing body is arranged in the inner cavity of the tail end of the outer tube, and a gas lift through hole is formed in the side wall of the outer tube above the lower sealing body so that power gas enters the outer wall and the inner wall of the oil tube from bottom to the annular space between the outer wall of the outer tube through the continuous oil tube, the head end inner wall of the outer tube is in threaded connection with the annular space between the outer wall of the outer tube and the inner wall of the continuous oil tube, and the inner wall of the inner tube through the diffusion tube, the head end of the inner tube is sequentially connected with the inner wall of the outer tube, the inner tube through the diffusion tube, the inner tube and the inner tube through the diffusion tube, the inner tube and the inner tube through the diffusion tube, and the inner tube.
2. The fixed tubular coiled tubing towed jet pump gas lift process string of claim 1, wherein: an upper connector is arranged on the outer wall of the head end of the upper expansion rubber cylinder seat.
3. A method of operating a fixed string coiled tubing towed jet pump gas lift process string as claimed in claim 1, wherein: the method comprises the following steps of:
step 1, firstly, a well-dredging pipe column is put into an oil well to be lifted, so as to ensure that a well-dredging tool is put into the bottom hole position of the oil well to be lifted for a plurality of times, and the well-dredging pipe column is lifted after well dredging is finished;
step 2, a coiled tubing of an immovable string is dragged to a jet pump gas lift process string to be lifted to a selected depth position of an oil well, power fluid is injected into the coiled tubing to seal an expansion rubber barrel, simultaneously an annular control valve between the inner wall of the oil tube and the outer wall of the coiled tubing is throttled and pressurized to check sealing, the change condition of injection pressure is observed, if the annular injection pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is stable and unchanged after the requirement is met, the expansion rubber barrel is well sealed, if the annular pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is unstable, the injection fluid enters into a stratum, the immovable string coiled tubing is required to be lifted out, the expansion rubber barrel on the coiled tubing is replaced, the continuous tubing of the immovable string is dragged to be lifted again, and the sealing process is repeated again until the annular injection pressure between the inner wall of the oil tube and the outer wall of the coiled tubing is stable and unchanged after the requirement is met;
step 3, connecting a ground tool after seal inspection is qualified, injecting power gas into the continuous oil pipe, and carrying out gas lift operation on underground liquid in the annular space between the outer wall of the pipe column above the expansion rubber cylinder and the inner wall of the oil pipe;
and 4, injecting power gas into the coiled tubing when the gas lift operation is required to be carried out on the underground liquid at the next layer, and after the expanding rubber sleeve is unsealed, dragging the jet pump gas lift process tubular column to the next layer by using the continuous tubing without the tubular column, and repeating the steps 1-3, thereby completing the gas lift operation of the whole oil well to be lifted.
4. The method of operating a fixed string coiled tubing towed jet pump gas lift process string of claim 3, wherein: in step 1, the outside diameter of the well tool is the same as the outside diameter of a coiled tubing string dragging jet pump gas lift process string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110535650.6A CN114251057B (en) | 2021-05-17 | 2021-05-17 | Gas lift process pipe column of continuous oil pipe dragging jet pump with fixed pipe column and operation method of gas lift process pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110535650.6A CN114251057B (en) | 2021-05-17 | 2021-05-17 | Gas lift process pipe column of continuous oil pipe dragging jet pump with fixed pipe column and operation method of gas lift process pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114251057A CN114251057A (en) | 2022-03-29 |
| CN114251057B true CN114251057B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110535650.6A Active CN114251057B (en) | 2021-05-17 | 2021-05-17 | Gas lift process pipe column of continuous oil pipe dragging jet pump with fixed pipe column and operation method of gas lift process pipe column |
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| CN (1) | CN114251057B (en) |
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| CN201687407U (en) * | 2010-05-06 | 2010-12-29 | 中国石油天然气集团公司 | Gas-lift completion string used for high angle deviated holes |
| CN202117638U (en) * | 2011-06-23 | 2012-01-18 | 北京华油兴业能源技术有限公司 | Novel gas lifting downhole tool of continuous oil tube |
| CN105350944A (en) * | 2015-12-06 | 2016-02-24 | 长江大学 | Gas injection tool for continuous oil tube gas jack |
| CN206830146U (en) * | 2017-06-26 | 2018-01-02 | 西南石油大学 | A kind of new gaslift mining system containing cyclone separator arrangement |
| CN206957668U (en) * | 2017-06-26 | 2018-02-02 | 中国石油化工股份有限公司 | Oil well liquid-producing section plane test tubing string |
| CN108457601A (en) * | 2018-04-10 | 2018-08-28 | 山东普瑞思德石油技术有限公司 | Gas-lift production one plows completion tubular column and technique |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8191624B2 (en) * | 2007-10-12 | 2012-06-05 | PTT Exploration and Production Public Company Limited. | Bypass gas lift system for producing a well |
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2021
- 2021-05-17 CN CN202110535650.6A patent/CN114251057B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201687407U (en) * | 2010-05-06 | 2010-12-29 | 中国石油天然气集团公司 | Gas-lift completion string used for high angle deviated holes |
| CN202117638U (en) * | 2011-06-23 | 2012-01-18 | 北京华油兴业能源技术有限公司 | Novel gas lifting downhole tool of continuous oil tube |
| CN105350944A (en) * | 2015-12-06 | 2016-02-24 | 长江大学 | Gas injection tool for continuous oil tube gas jack |
| CN206830146U (en) * | 2017-06-26 | 2018-01-02 | 西南石油大学 | A kind of new gaslift mining system containing cyclone separator arrangement |
| CN206957668U (en) * | 2017-06-26 | 2018-02-02 | 中国石油化工股份有限公司 | Oil well liquid-producing section plane test tubing string |
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| CN114251057A (en) | 2022-03-29 |
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